1  /* Support for single-thread optimizations.  Statically linked version.
       2     Copyright (C) 2020-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <sys/single_threaded.h>
      20  
      21  /* In dynamically linked programs, this variable is initialized in
      22     __libc_early_init (as false for inner libcs).  */
      23  #ifdef SHARED
      24  char __libc_single_threaded;
      25  #else
      26  char __libc_single_threaded = 1;
      27  #endif
      28  libc_hidden_data_def_alias (__libc_single_threaded,
      29  			    __libc_single_threaded_internal)